The HTC One Android 4.4 KitKat update began rolling out in Europe this week.

HTC announced back in November that the update would be available by the end of this month and stuck to its original promise by delivering it in a timely fashion. Availability is dependent on country and carrier so roll out times will vary.

The update is 308 MB and adds support for Bluetooth profiles along with cloud printing. Other security changes are also part of the update including the removal of Flash support. The battery icons text were changed to white. There is no word on when the HTC One users in the U.S. will receive the update.

HTC will want to have the software available before the One's successor hits stores.

Recent rumors point to the next-gen model featuring dual-rear lenses for its camera.

A recently leaked photo of a case said to be for the back of the device shows two large cut outs that could be used for a lens and something else. One of the holes might be for a fingerprint sensor, however, the company's lack of success with the component on the HTC One Max would make going with something like a dual-lens a better idea.

A new report from Bloomberg backs this notion by citing a person with direct knowledge of the HTC One successor. The publication claims that the new model will debut in March and will come with a twin-rear sensor camera. This will give the camera better focus and depth of field and image quality.

HTC has not confirmed any information on the HTC One successor at this time so all this should be taken with a grain of salt.